平坦/粗糙地表下目标散射特性的MPSTD算法分析  

MPSTD Algorithm Simulations of Scattering by Objects Buried in Soil with the Plane or Rough Soil-Air Surface

作　　者：杨虎[1] 姜永金[2] 毛钧杰[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073 [2]空军雷达学院电子对抗系,武汉430019

出　　处：《微波学报》2007年第6期1-6,共6页Journal of Microwaves

基　　金：国家自然科学基金资助项目(60402034)

摘　　要：将MPSTD算法与特征变量-物理边界(CV-PB)匹配条件相结合来模拟探地雷达(GPR)问题,对平坦地表/粗糙地表下不同电磁参数、不同形状目标的散射特性进行了分析。由于这类电磁问题中不仅存在多种类型的子域分界面,而且子域分界面两侧存在多种媒质参数,所以它的准确分析不仅进一步验证了CV-PB匹配条件的有效性和准确性,而且也为电大尺寸空间复杂地表、复杂媒质中曲面形状目标体散射特性的快速、准确分析提供了一种思路。The MPSTD algorithm combined with the characteristic variables-physical boundary （CV-PB） matching condition is applied to model ground-penetrating radar（GPR） applications. The scattering characteristic of objects with different electric parameters and geometric shape is analyzed, and an plane （ or rough） soil-air surface is considered at the same time. Since many types of interfaces exist in this kind of problem and many parameters of media distribute in both sides of the interface, the effectiveness and accuracy of the CV-PB matching condition is validated by accurately analyzing the problem. As well as it offers a scheme to analyze the scattering characteristic of curved objects in a large-sacle complex media half space with undulating soil-air surface accurately and efficiently.

关 键 词：多区域时域伪谱(MPSTD)算法 特征变量-物理边界(CV—PB)匹配条件 探地雷达(GPR) 

分 类 号：TN953[电子电信—信号与信息处理]